package io;

import java.io.*;

/**
 * 缓冲流：是一对高级流，作用是加快读写效率
 * （1）：BufferedInputStream:
 */
public class CopyDemo3Bufferend {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("mimi.jpg");
        BufferedInputStream bis = new BufferedInputStream(fis);
        FileOutputStream fos = new FileOutputStream("mimi2.jpg");
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        long start = System.currentTimeMillis();
        int d;
        while ((d=bis.read())!=-1){
            bos.write(d);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕，耗时"+(end-start)+"ms");
        bos.close();
        bis.close();
    }
}
